Type-writing machine



(No Model.) 3 .Sheets-Sheet 1,

W. J. PERKINS.

. vTYPE WRITING MACHINE. No. 594,706. PatentedNov. 30, 1897.

(No Model.) I 3 Sheets-Sheet; 2.

W. J. PERKINS. Y

TYPE WRITING MACHINE. No. 594,706. Patented Nov. 30,1897.

.o @QM (No ModeL)` Rib "Nrrnn" STATES PATENT union.

VILLIS J. PERKINS, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR, BY MESNEASSIGNMENTS, TO Tl-IE SMITH PREMIER TYPEWRITER COMPANY, OF

SYRAOUSE, NEW YORK.

TYPE-WRlTmo MAcHlNE.

SPECIFICATION forming part of Letters Patent No. 594,706, dated November30,' 1897.

Original application filed J nly 24, 1886, Serial No. 208,966. Dividedand this application led July Z8, 1892. Serial No.

- 441,530. N model.)

To all whom it may concern.-

Be it known that I, WILLIS J. PERKINS, residing at Grand Rapids, in thecounty of Kent and State of Michigan, have invented certain new anduseful Improvements in Type-Writers, of which the following isaspec'ication, reference being had therein to the accompanying drawings.

This invention relates to type-writing ma- 1o chines, and especially tothe ribbon mechanism thereof.

The object of the invention is to shift the inking-ribbon automaticallyand uniformly; also to improve the construction and combination of partsrelating to the ink-ribbon mechanism. A

This application is a division of original application, Serial No.208,966, filed July 24, 1886, and the other division ofwhich was patzoented April 28, 1895, No. 587,998. In the original application it wasstated that parts were omitted in many of the figures and parts Wereshown broken, and in some instances ,only the position of a part wasindicated. The

2 5 same is true of this division of said application. It should beunderstood that I expect to avail myself of usual and knownconstructions in this and analogous arts and of the expert skill ofmechanics in the carrying out of my 3o invention according to thegeneral principles thereof. Figure 1 is an edge plan of the ribbon-reelsand driving and shifting mechanism. Fig. la is a partial section of thesame. Fig. 2 is 3 5 an elevation of the ink-ribbon-shifting mechanism;Fig. 8, a partial end elevation of a portion of the ink-ribbon-shiftingapparatus, part of the frame and paper-'roll being shown in section;Fig. 4, a detail of ink-ribbon-shift- 4o ing apparatus on line o 0, Fig.l; Fig. 5, an elevation of mechanism for shifting pawls ofinking-ribbon. Fig. G is a plan of the ribbonshifting mechanism. Fig. 7is a diagrammatic perspective illustrating the general arrangement ofthe ribbon-reels with reference to their supporting-axles; Fig. 8, apartial elevation of portion of ribbon-shifting apparatus; Fig. 9, apartial detail showing ribbon and supports and paper-roll inperspective.

The mechanism for automatically and continuously shifting thetype-inking ribbon, so that the wear on the same and the color furnishedto the paper may be uniform, is as p The inking-ribbon is made to unwinditself from one drum or spool and wind upon another, and reverse thismovement automatically as soon asv it shall have completed its travel.It is also shifted laterally across'the plane of impression of the typeon the paper. 6o (See Figs. 8, 7, and 8.)

Two spools or reels x are made of a width to receive an inking-ribbon ofusual character. These reels are splined to shafts 0c m', suitablysupported in the frame of themachine, so as to rotate with the shafts,but are free to slide longitudinally thereon. x2 and :1:4 are gears onthese shafts, having an intermediate x3. This train of gears causes theshafts and reels to rotate in unison. Gears 002 and 7o @c3 have pawlsm13 and 001.4 engaging therewith, so that when the pawls are suitablyactuated the gears may be turned. The pawls x13, and m14 are pivoted toa lever x19 at equal distances from the pivoted center of said lever.The lever w'is attached to the spacing-lever h3 by a pitman connectionx21. Thus when the spacing-lever moves,the pawl-actuating lever x19 isalso turned slightly about its pivot, and one of the pawls x13 and x14is raised, while 8o the other is depressed. (See Figs. 2, 5, andV 6.)Thus whichever pawl is in engagement with the wheels zand x3 serves toactuate the train of gears and unwind the ink-ribbon a little distancefrom one reel onto the other. 8 5 On the side of the gear x2 is apivoted pawl or fly m26, and on the side of gear x3 there is a pivotalpawl x27, a pin at each side of each pawl or fly limiting its movementin either dIeCtiOn. 9o

When the wheel :n2 is rotated in the direction of arrow x32, Fig. 2, thepawl or fly m26 will not engage the teeth on spaced gearwheel x9 byreason of the location of the pawl m26 and its pins with the relation tothe teeth 95 of said wheel, which is mounted on the shaft co7, as shown.Thewpawl m27, however, moving in the direction of arrow 5033, Fig. 2,engages one tooth on the spaced gear-wheel x9 and rotates said wheel onespace. roo

The spaced gear-wheelw1 has sixteen teeth, as shown. The gears Q52 and0:3 (and the ribbon-reels) Will thus make sixteen revolutions to onerevolution of the spaced gear :1;9.

The shaft x1, to Which 'the spaced gear mi is keyed, bears also thesingle-toothed gear x25, which single-tooth Wheel w25 engages a sixtoothgear m21, which is fastened to shaft :1:29, Which bears the six-sidedrace-cam m11. As the sides or operating-faces of the cam agree with thenumber of cogs on gear 0021 it is apparent that when the wheel 902'* isshifted one space one of the cam-faces on cam m11 makes a completestroke or impulse. This cam-plate w11 has a pin or roller ai moving inits race- Way, which pin or roller is connected to a slide-bar m12.

The bar x12 slides in bearings and is connected to pawl :L11 at one endby a pitman-rod x16. This pitman has a slot in the end in which a pin onpawl :r11 rests. The pawl is held toward the pitm an by spring w18. Asimilar connection of pawl x13 to the other end of the slide-rod m12 ismade by means of slotted pitman 0015 and spring x11. The shifting of theslide-bar m12 by means of the race-cam w11 thus shifts the pawls U13 andx11, one being thrown out of gear with its pinion whenever the other isthrown in.

To prevent the possibility of pawls m13 and 014 becoming locked on adead-center, so that vneither one shall engage its gear-Wheel, there isa ratchet-Wheel 0010 on shaft a'7 and a pawl :1620 on lever 0019engaging said ratchet-wheel m10. The ratchet-Wheel 0010 has teeth onlyon a part of its surface, the remainder of its periphery being smooth.The teeth on the ratchet-Wheel correspond With the point of engagementof the single-tooth gear with the six-tooth gear 0321, this being theshiftingpoint of the slide-bar 0012. Should the racecam therefore failto make a complete shift of the slide-bar and its pawls, this positiveratchet engagement will complete the movement-that is, the lever 0011being positively driven will positively move pawl 1320. Then pawl 0020is in engagement with the toothed portion of Wheel w10, it will rotatesuch Wheel and with it the shaft x7 and of course the train connectedwith such shaft, thereby insuring the movement of the race-cam andconnections, but When the paWl :1:20 engages the smooth face of thewheel 0:10 ithas a mere lost motion and no propulsive effect.

By the mechanism made in the proportions described each movement of thelever h3, which is connected to the key mechanism, causes a movement ofthe ribbon-reels. Sixteen revolutions of one of the gears x2 or Q03causes one revolution of the wheel m, and this shifts the race-cam onespace through the mechanism described, thus throwing the opposite pawlof the two pawls 0013 and m11) into engagement and reversing themovement of the ribbon. Of course other convenient proportions of themechanism may be adopted. Thus the traveling of the ribbon back andpivot of lever x1.

forth from one reel to the other under the impulse of the key mechanismis quite automatic.

The transverse shifting of the ribbon is effected b v means of aface-cam m8, which is loose on shaft es', the face-cam being attached togear Q05, which is actuated by the one-tooth gear fr on shaft x7. Thecam-face of cam m8 is divided by a series of radial notches. The rodm22, which is drawn endwisc by a spring 5021, has a bent arm :1323,which extends partly across the face of face-cam Q38, so as to lie inone of the grooves when the cam is at rest. The rod m22 has a pinbearing against the :forked rockerarm x28, the rocker-arm being'connected to rock-shaft 0031 and its fork engaging a groove in theperiphery of the hub n30 of reel at. The rock-shaft 0031, Fig. l, isconnected to rockerarm m23, and the other end of said bar is connectedto a similar arm engaging a groove in the hub of the other reel 0c, sothat the two reels are shifted simultaneously. Then the spaced gear x11has made one revolution, the gear al" engages gear and turns it as faras the distance between the grooves in its face. This shifts the bar5022 lengthwise and so slides the reels m a; lengthwise on their shaftsfn a," by the mechanism heretofore explained.

It will be noticed that the pawl m13 Works on the downstroke, while pawlm11 Works on the upstroke, but on the opposite side of the ThusWhichever pawl is in operative connection gives its impulse to theribbon after the printing has been done.

The inking-ribbon am" is supported on a plate m35, (see Fig. 3,) whichplate x35 has a slot in it, permitting the type to strike through theslot toward the paper-roll a.

It will be understood that many of the figures of the illustration arediagrammatic, the machine-frame and supports being intentionally omittedfor convenience of illustration.

It is evident that slight changes may be made from the form shown anddescribed without departing from the spirit of the invcntion; also, thatthe substitution of an equivalent, as a Weight for a spring or one formof gear or lever for another, is within the scope of the invention.

No broad claim is made herein to an automatic shifter operating to shiftthe ribbon laterally during the travel of the carriage, but thecombinations of mechanisms hereinafter claimed are believed to be new,and the mechanical structures involved are also intended to coverequivalents.

I claiml. In a type-Writing machine, the ribbonspools and supportstherefor, means for moving the ribbon longitudinally from one spool tothe other, a rotating cam and connections therefrom to the ribbon-spoolsby which said spools are moved to carry the ribbon laterally, and aspring acting on said spools against the force of the cam.

2. The combination, in a type-Writing machine, of ribbon-supports andmeans for Wind- ICO IIO

ing the ribbon thereon, an inclined bearingsurface and connections froman operative part of the machine to move said surface and thereby shiftthe ribbon sidewise, and a spring operating against the force of saidinclined surface to press the ribbon in opposite direction.

3. In a type-writing machine, the ribbon, two spools on which the ribbonis supported, means for rotating these spools to traverse the ribbonlongitudinally and means for automatically traversing the spoolsindependently of their supports to move the ribbon laterally in a planeparallel with the face of the type when in printing position.

4. In a type-Writing machine, the combination of the hiking-ribbon andits supportingspools, means for Winding the ribbon longitudinally onsaid spools and for automatically reversing the movement thereof, andmechanism for automatically shifting the ribbon laterally and reversingsuch lateral movement, all substantially as described.

5. In a type-Writing machine, the inkingribbon and its supports andmeans for moving the ribbon in the direction of its length and forreversing this movement automatically, and means for traversing theribbon in the direction of its width, and for reversing this movementautomatically, all combined substantially as described.

6. In a type-Writing machine, the inkingribbon and its supports, meansfor feeding the ribbon longitudinally with a series of impulses, meansfor automatically moving the ribbon sideivise for a determined distance,and means for reversing the lengthwise movement, substantially asdescribed.

7. ln a type- Writing machine, the inkingribbon and supports, and atrain of drivinggears automatically operated from a moving part of themachine, said train comprising within itself a reversing mechanism fortraversing the ribbon lengthwise a determinable distance and thenautomatically reversing this lengthwise movement, substantially asdescribed.

S. In a type-Writing machine, the ribbonspools and their supports and apositivelydriven train of mechanism comprising Within itself a motorpart which at a determinable interval reverses the rotary movement ofsaid spools, in combination substantially as described.

9. In a type-Writing machine, the ribbonsupporting reels, a rock-shafthaving arms connected to both reels, and means for rocking said shaftautomatically to automatically shift said reels in the direction oftheir length, substantially as described.

10. In a type-writin g machine, the reel-supporting shafts and means forpositively driving both shafts simultaneously, reels supported on saidshafts and a train of mechanism by Which both reel-shafts are positivelydriven, all combined.

11. In a type-Writing machine, the combimay be rotated, and a leverconnected to the driving-ratchets of both reels, whereby both may bedriven and the movement of both positively reversed simultaneously,substantially as described. v

14. In a type-Writing machine, the ribboni winding reels both positivelyrotated simultaneously, a train of lever mechanism, and pawls operatedby the lever mechanism to positively reverse the rotation of thewinding-reels, all combined substantially as described.

15. In a type-Writing machine the ribbonreels ratchet-wheels connectedto said reels, a lever having pawls operatively engaging said ratchet-Wheelsv and variable driving mechanism operating on said paWls to shiftthem simultaneously and thereby reverse the rotary movement of thereels, all combined substantially as described.

16. In a type-Writing machine, the ribbonspools and their supports, arock-shaft and means for oscillating the same automatically, and armsfrom the rock-shaft connecting to ICO the ribbon-spools to shift them inthe direcp tion of their length, and simultaneously, substantially asdescribed.

17. In a type-Writing machine, the ribbonspools, the ratchet-wheelsconnected thereto and the pawls engaging said Wheels, the lever by whichsaid paWls are operated, and the intermittingly-rotating shifter formingpart of the driving-train and connected to the paWls, whereby they arealternately engaged and disengaged and by which the direction ofmovement of the reels is controlled, all combined substantially asdescribed.

1S. In a type-writin g machine, the ribbonspools and drivin g-gear forrotating thesame positively, a mutilated gear-Wheel engaging saiddriving-gear to rotate the spools intermittingly, and means connected tothe operative parts of the machine for rotating said mutilated gear, allcombined substantially as described.

19. The combination in a type-Writing machine, of an inking-ribbon,longitudinally- Winding mechanism therefor, means for automaticallyreversing the longitudinal movement, and an automatic lateral-shiftin gmechanism for the ribbon, substantially as described.

20. The combination in a type-Writing ma- IIO chine, of an inking-ribbonand ribbon-supports and longitudinal-feed mechanism, automatic reversingmechanism, and a mechanism for automatically shifting the ribbonsidewise, substantially as described.

21. In a type-Writing machine, a ribbon, ribbon supports, and variableautomatic means for moving the ribbon lengthwise from one support to theother, combined with mechanisin for automatically shifting the ribbonlaterally, so as to use the ribbon in parallel longitudinal lilies.

22. Means for moving the ribbon length- Wise and for reversing saidmovement, and means for shifting the ribbon sidewise, operativelyconnected to the train of mechanism for moving the ribbon lengthwise,whereby the lengthwise travel of the ribbon may be reversed, and theribbon also moved sidewise, to present parallel lines of Workingsurface. In testimony whereof I affix my signature in presence of twoWitnesses.

VILLIS J. PERKINS. lVitnesses:

W A. BAnrLET'r, S. BnAsHnARs.

